Soft zoom lens system

Details Soft zoom lens system Soft zoom lens system

2007-04-24

2007-04-24

Schwartz, Jordan M. (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S691000, C359S694000

Reexamination Certificate

active

11217323

ABSTRACT:
A soft zoom lens system includes an axially expandable or shrinkable holding portion, a supporting portion, a first lens and a second lens. This holding portion has an inner space, a first end and a second end. The supporting portion is made by a soft material. The first lens is disposed between the first end and the supporting portion. The second lens is disposed between the second end and the supporting portion. When this holding portion is applied by predetermined electricity, it will expand or to shrink axially. So, the curvatures of the first lens and the second lens will be changed. The zooming is performed. The invention's structure is simple. The adjusting of focal length is easy. The production is easy with low cost.

REFERENCES:
patent: 6952313 (2005-10-01), Schrader
patent: 2006/0028734 (2006-02-01), Kuiper et al.

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